for (i = 0; i < 7; i++)
{
	min = matrix[i, 0];
	for (q = 0; q < 4; q++)
	{
		if (min > matrix[i, q])
			min = matrix[i, q];
	} 
    mas[i] = min;
}

for (i = 0; i < 6; ++i)
{
	min = i;
	for (j = i + 1; j < 7; ++j)
    	if ( mas[min] < mas[j])
        	min = j;
    if ( min != i)
    {
    	for (k = 0; k < 5; k++)
		{
			mas[k] = matrix[i, k]; 
            matrix[i, k] = matrix[j, k];
            matrix[j, k] = mas[k];
		} 
    }
}